Chair frame



FIG. 1 is a perspective view of a chair frame embodying the design ofthe present invention;

FIG. 2 is a side elevation of the chair frame of FIG. 1;

FIG. 3 is a bottom plan of the chair frame of FIG. 1;

FIG. 4 is a back elevation of the chair frame of FIG. 1;

FIG. 5 is a front elevation of the chair frame of FIG. 1; and

FIG. 6 is a top plan of the chair frame of FIG. 1.

The ornamental design for a chair frame, substantially as shown anddescribed.